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@ -147,14 +147,6 @@ struct big_ {
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char dummy[2];
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};
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// A compile-time assertion.
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template <bool>
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struct CompileAssert {
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};
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#define COMPILE_ASSERT(expr, msg) \
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typedef CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1]
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// A helper type used to indicate that a key-compare-to functor has been
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// provided. A user can specify a key-compare-to functor by doing:
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//
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@ -166,7 +158,7 @@ struct CompileAssert {
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// };
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//
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// Note that the return type is an int and not a bool. There is a
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// COMPILE_ASSERT which enforces this return type.
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// static_assert which enforces this return type.
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struct btree_key_compare_to_tag {
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};
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@ -1393,20 +1385,20 @@ class btree : public Params::key_compare {
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// key_compare_checker() to instantiate and then figure out the size of the
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// return type of key_compare_checker() at compile time which we then check
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// against the sizeof of big_.
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COMPILE_ASSERT(
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static_assert(
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sizeof(key_compare_checker(key_compare_helper()(key_type(), key_type()))) ==
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sizeof(big_),
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key_comparison_function_must_return_bool);
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"key_comparison_function_must_return_bool");
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// Note: We insist on kTargetValues, which is computed from
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// Params::kTargetNodeSize, must fit the base_fields::field_type.
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COMPILE_ASSERT(kNodeValues <
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static_assert(kNodeValues <
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(1 << (8 * sizeof(typename base_fields::field_type))),
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target_node_size_too_large);
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"target_node_size_too_large");
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// Test the assumption made in setting kNodeValueSpace.
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COMPILE_ASSERT(sizeof(base_fields) >= 2 * sizeof(void*),
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node_space_assumption_incorrect);
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static_assert(sizeof(base_fields) >= 2 * sizeof(void*),
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"node_space_assumption_incorrect");
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};
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////
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